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Me, sobbing: "Look, you can't just point at an empty struct and call it a RandomNumberGenerator." Swift 5.4, pointing at anything: "RNG."
22 lines
981 B
Swift
22 lines
981 B
Swift
//===--- Random.swift -----------------------------------------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2021 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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// RUN: %target-typecheck-verify-swift
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struct Jawn { }
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// Me, sobbing: "Look, you can't just point at an empty struct and call it a
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// RandomNumberGenerator."
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// Swift 5.4, pointing at this Jawn: "RNG."
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extension Jawn: RandomNumberGenerator { }
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// expected-error@-1 {{type 'Jawn' does not conform to protocol 'RandomNumberGenerator'}}
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// expected-error@-2 {{unavailable instance method 'next()' was used to satisfy a requirement of protocol 'RandomNumberGenerator'}}
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